Eldest Bates son Zach and his wife Whitney planned a grand birthday party for Bradley, who is the eldest grandchild for Kelly Jo and Gil Bates. And it was a big deal for the family clan. Everyone came out for the party: grandparents, great grandparents, aunts and uncles (meaning the Bates siblings) and, of course, friends of the couple.

Since almost all of the Bates family was there (except for some of the older, married kids like Michaela and Brandon Keilen, and Alyssa and John Webster, because they live out of state), it was the perfect time to make a big family announcement.

Zach and Whitney presented her parents and his parents, as well as their grandparents, with photos of the family of three. But what Kelly Jo didn't realize because she didn't have her glasses was that in the photo the family was holding a sign. And on the sign there was a message. A very important message that read, "Our family is growing by two feet and one heart, Baby Bates is due to arrive Summer (sic) 2016."

"It went right over our heads," Gil said with a laugh later while talking to the cameras.

"I think we were the last to know," Kelly Jo added with a smile.

But their confusion only made the moment all the more memorable. It was shared with excitement as the girls squealed and everyone congratulated the expectant family. Kelly Jo's jaw literally dropped when Gil did finally read the announcement to her.

"I wanted to cry. I was just so happy," Whitney said of the moment. "And it was so loud in there because Carlin and all the girls were screaming 'Oh, my goodness! I can't believe you're pregnant!' It was just such a relief because I got to tell everybody. I was so happy. I just couldn't quit smiling."

"You still can't quit smiling," Zach added, also grinning from ear to ear.

Since the show was filmed, Whitney has announced that she is expecting a baby girl and they are naming her Kaci Lynn.